Entry_ID: NSIDC-0436
Entry_Title: Microstructural Location and Composition of Impurities in Polar Ice Cores
Group: Data_Set_Citation
   Dataset_Creator: Baker, I. and R. Obbard.
   Dataset_Title: Microstructural Location and Composition of Impurities in Polar Ice Cores
   Dataset_Release_Date: 2010-02-15
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC: National Snow and Ice Data Center
   Online_Resource: http://nsidc.org/data/nsidc-0436.html
   Dataset DOI: http://dx.doi.org/10.7265/N5DF6P5P
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Ian
   Last_Name: Baker
   Email: Ian.Baker@Dartmouth.edu
   Group: Contact_Address
      Address: Dartmouth University
      Address: Thayer School of Engineering
      Address: 8000 Cummings Hall
      City: Hanover
      Province_or_State: NH
      Postal_Code: 03755
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Rachel
   Last_Name: Obbard
   Email: Rachel.W.Obbard@Dartmouth.EDU
   Phone: 1 603 646-9613 x
   Group: Contact_Address
      Address: Dartmouth University
      Address: Thayer School of Engineering
      Address: 8000 Cummings Hall
      City: Hanover
      Province_or_State: NH
      Postal_Code: 03755
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Technical Contact
   First_Name: NSIDC
   Last_Name: User Services
   Email: nsidc@nsidc.org
   Phone: 1 303 492-6199 x
   Fax: 1 303  492-2468 x
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: CIRES, 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Glaciers/Ice Sheets
   Variable_Level_1: Ice Sheets
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Paleoclimate
   Term: Ice Core Records
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Paleoclimate
   Term: Ice Core Records
   Variable_Level_1: Ice Core Air Bubbles
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Paleoclimate
   Term: Ice Core Records
   Variable_Level_1: Ions
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Paleoclimate
   Term: Ice Core Records
   Variable_Level_1: Particulate Matter
End_Group
ISO_Topic_Category: Climatology/Meteorology/Atmosphere
Keyword: Antarctic Ice Sheet
Keyword: Ice Core
Keyword: Ice Core Chemistry
Keyword: Ice Core Data
Keyword: Ice Cores
Keyword: Ice Sheet
Keyword: Microstructure
Sensor_Name: ION CHROMATOGRAPHS
Sensor_Name: PARTICLE DETECTORS
Sensor_Name: SCANNING ELECTRON MICROSCOPES
Source_Name: LABORATORY
Group: Temporal_Coverage
   Start_Date: 1999-01-01
   Stop_Date: 2005-12-30
End_Group
Data_Set_Progress: complete
Group: Spatial_Coverage
   Southernmost_Latitude: -80.016667
   Northernmost_Latitude: -80.016667
   Westernmost_Longitude: -119.516667
   Easternmost_Longitude: -119.516667
   Minimum_Altitude: 1530 meters
   Maximum_Altitude: 1530 meters
End_Group
Group: Spatial_Coverage
   Southernmost_Latitude: 72.583333
   Northernmost_Latitude: 72.583333
   Westernmost_Longitude: -38.466667
   Easternmost_Longitude: -38.466667
   Minimum_Altitude: 3203 meters
   Maximum_Altitude: 3203 meters
End_Group
Group: Spatial_Coverage
   Southernmost_Latitude: 72.583333
   Northernmost_Latitude: 72.583333
   Westernmost_Longitude: -38.466667
   Easternmost_Longitude: -38.466667
   Minimum_Depth: 94 meters
   Maximum_Depth: 2950 meters
End_Group
Group: Spatial_Coverage
   Southernmost_Latitude: -72.466667
   Northernmost_Latitude: -72.466667
   Westernmost_Longitude: 106.8
   Easternmost_Longitude: 106.8
   Minimum_Altitude: 3500 meters
   Maximum_Altitude: 3500 meters
End_Group
Group: Spatial_Coverage
   Southernmost_Latitude: -72.466667
   Northernmost_Latitude: -72.466667
   Westernmost_Longitude: 106.8
   Easternmost_Longitude: 106.8
   Minimum_Depth: 248 meters
   Maximum_Depth: 3416 meters
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: ANTARCTICA
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: NORTH AMERICA
   Location_Subregion1: GREENLAND
End_Group
Group: Location
   Location_Category: GEOGRAPHIC REGION
   Location_Type: POLAR
End_Group
Project: GISP2 > Greenland Ice Sheet Project II
Data_Set_Language: English
Originating_Center: AGDC
Group: Data_Center
   Data_Center_Name: NSIDC > National Snow and Ice Data Center
   Data_Center_URL: http://nsidc.org
   Group: Personnel
      Role: Data Center Contact
      First_Name: NSIDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 
      Fax: 1 303  492-2468 
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Data_Center
   Data_Center_Name: AGDC > Antarctic Glaciological Data Center
   Data_Center_URL: http://nsidc.org/agdc/
   Group: Personnel
      Role: Data Center Contact
      First_Name: AGDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 x
      Fax: 1 303  492-2468 x
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 700 KB
   Distribution_Format: Microsoft Excel
End_Group
Group: Reference

   Alley, R. B and G. A. Woods, 1996. Impurity influence on normal grain growth 
   in the GISP2 ice core, Greenland. J. Glaciol., 42(141), 255-260.

   Baker, I., D. l Iliescu, R. Obbard, H. Chang, B. N. Bostick,and C. P. 
   Daghlian. 2006. Microstructural characterization of ice cores, Annals of 
   Glaciology, vol. 42, p. 441.

   Baker, I., R. W. Obbard, D. Iliescu and D. Meese. 2007. Microstructural 
   Characterization of Firn. Hydrological Processes, vol. 21, no. 12, p. 1624.   
   Baker, I., R. W. Obbard, D. Iliescu and D. Meese. 2006. Microstructural 
   Characterization of Firn. Proceedings of the 46th Eastern Snow Conference, 
   Bibliography: p. 211. 

   Buck, C. F., P. A. Mayewski, M. J. Spencer, S. Whitlow, M. S. Twickler, and D. 
   Barrett. 1992. Determination of major ions in snow and ice cores by ion 
   chromatography. Journal of Chromatography A, Volume 594, Issues 1-2, 6 March, 
   Pages 225-228, doi: 10.1016/0021-9673(92)80334-Q. 

   Cullen, D. C. 2002. The Structure and Chemistry of Polar Glacier Ice. PhD 
   Thesis, Thayer School of Engineering, Dartmouth College, Hanover, NH. 

   Cullen, D. C. and I. Baker. 2000. Correspondence. The Chemistry of Grain 
   Boundaries in Greenland Ice. J. Glaciology, 46(155), 703-706.

   Cullen D. C. and I. Baker. 2001. Observations of Impurities in Ice. Microsc. 
   Res. Tech., 55(3), 198-207.

   Gow, A. J., D. A. Meese, R. B. Alley, J. J. Fitzpatrick, S. Anandakrishnan, G. 
   A. Woods and B. C. Elder. 1997. Physical and structural properties of the 
   Greenland Ice Sheet Project 2 ice core: A review. J. Geophys. Res., 102(C12), 
   26559-26575.   Iliescu, D. and I. Baker. 2008. Effects of Impurities and their 
   Redistribution during Recrystallization in Ice Crystals, Journal of 
   Glaciology, vol. 54, p. 362. 

   Obbard, R., I. Baker and D. Iliescu. 2006. Grain Boundary Grooving in Ice in a 
   Scanning Electron Microscope, Journal of Glaciology, vol. 52, no. 176, p. 169. 

   Obbard, R., I. Baker and K. Sieg. 2007. Using Electron Backscatter Diffraction 
   Patterns to Examine Recrystallization in Polar Ice Sheets, Journal of 
   Glaciology, vol. 52, no. 179, p. 546.

   Obbard, R. and I. Baker. 2007. The Microstructure of Meteoric Ice from Vostok, 
   Antarctica, Journal of Glaciology, vol. 53, no. 180, p. 41.

End_Group
Group: Summary

   This data set contains measurements of impurities and ions in three polar ice 
   cores: the Vostok 5G ice core and the Byrd ice core from Antarctica, and the 
   Greenland Ice Sheet Project 2 (GISP2) D core. Parameters include sample depth, 
   grain size, ion concentration, and ice core impurity information. Measurements 
   were made using Ion Chromatography (IC), optical microscopy, and Scanning 
   Electron Microscope-Energy Dispersive Spectroscopy (SEM/EDS). 

   Data are available via FTP in Microsoft Excel (.xls)and Microsoft Word (.doc) 
   formats.

End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://nsidc.org/agdc/
   Description: Antarctic Glaciological Data Center
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2010-02-15
Last_DIF_Revision_Date: 2013-03-20
DIF_Revision_History:  Added DOI